JGibson - Looking for family info

I’m trying to find information on my Great-Grandmother Lulu Myrtle Price-Gibson, who was supposedly full blooded Choctaw and from what I’ve gathered from family, is listed on the tribe scrolls. Her roll number is #766 on the Mississippi Choctaw roll. She was married to my Great-Grandfather Joe Sam Gibson on my father’s side. I’m not sure how accurate any of my info is or even if her name is spelled right, but I’d like to find out more about my possible heritage.